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Lilit [14]
2 years ago
5

7. A box is pulled straight across the floor at a constant speed. It is pulled with a horizontal force of 48 N.

Physics
1 answer:
Leya [2.2K]2 years ago
4 0

Answer:

a)Taking into consideration Newton’s second law, we know that

Net_Force = mass * acceleration

Since the box is pulled at constant speed, the acceleration is equal to zero.

This means that

Net_Force  = 0 N

b) Force of friction

The net force is equal to the sum of all forces,

Net_Force   = Force_applied - Friction

We found that Net_Force  = 0, which means

Friction = Force_applied = 48 N

c) If the box comes to a stop. And the applied force becomes zero, the friction force becomes also zero.

Friction  = 0 N

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